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ID help again please

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Kent
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« on: January 09, 2016, 06:18:15 pm »

This slab was in a pile given to me by the son of a life long geologist. The pile filled my truck so I have a bunch of stuff I don't know about. Looks like it has a bunch of fractures but I cut a piece off and am knee deep in a new pendant. Made it through the 80 grit so far. There was a faded label on the slab saying Matocita or Matocite or similar. Did a search but no luck. Any ideas ?



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Ranger_Dave
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« Reply #1 on: January 09, 2016, 07:33:21 pm »

There's a madocite, but it contains a lot of lead and is pretty soft, 3.something I think. I don't believe it looks like what you have.
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stdenis_jd
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« Reply #2 on: January 10, 2016, 06:25:57 am »

The label might have said Malachite, but that looks more like chrysocolla or chrysoprase to me. I'm leaning toward the latter...prase will be exponentially harder than colla (6.5 vs ~3.5) which should make it easy for ya.
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Jeff from Michigan
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« Reply #3 on: January 10, 2016, 10:28:57 am »

Looks more like varisite to me.
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slabbercabber
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« Reply #4 on: January 11, 2016, 10:33:42 am »

This is a sample of Wyoming agatitzed crysocholla That was sitting in front of me when I saw this.  If you like it, I have a lot of it.  Some has much more blue green than others, but none would be called gem.


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Kent
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« Reply #5 on: January 18, 2016, 01:42:11 pm »

https://nhmu.utah.edu/collections/microcline-var-amazonite

Wondering again about this stone.Thought maybe Chrysoprase but some searching led me to this site. Maybe a piece of Amazonite ?

Slabbercabber, that's a bundle of colors in that slab. Think it would take to being made into a pendant without breaking?  Wanna trade ? My piece held together to the end, rather amazing. I'll post in a bit.

Thanks

Kent
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